on board is his daughter and her any answer, students at byu and jonathan was meeting her family. the wedding is january 4. his son daniel and his wife are on the plane. if they survived crash surviving the weather is another major problem. >> right now we are in winter conditions with snow on the ground and temperatures you are in the single digits at night and this is hampering the search effort. >> dale smith is a software pioneer who founded serial tek and considered an experienced pilot. to that effect at 6:00, we will hear from a family member, one of those open board would said he has total faith if his ability. >> federal officials are on the heightened alert this morning after a truck carrying dangerous radioactive material was stolen south of the border. authorities say the truck was stolen at a gas station near mexico city. it was carrying a medical device to treat cancer patients and there is a radioactive material that can be dangerous if remove ed. it is not clear if the thieves know what they have. officials are concerned it could be used to make a dirty bomb which